01144cam a22002771 4500 hew66000030 DLC 20260227111514.0 721229s1965 dcua b f000 0 eng c hew66000030 (OCoLC)526291 U.S. Dept. of Health, Education, and Welfare. Library ODaWU OCoLC DLC L111 .A72 no. 784 QA135.5 .S6 Spross, Patricia McNitt, 1913- Elementary arithmetic and learning aids / by Patricia M. Spross. Washington : U.S. Dept. of Health, Education, and Welfare, Office of Education ; [for sale by the Superintendent of Documents, U.S. Govt. Print. Off., 1965. vi, 134 p. : ill. ; 26 cm. Circular (United States. Office of Education) ; no. 784 "OE-29063." L111.A72 no. 784 bound with Circular no. 785-no. 789 subsequent to publication. Bibliography: p. 129-134. Arithmetic Study and teaching (Elementary) Mathematics Study and teaching (Elementary) Teaching Aids and devices. 34588 34588